Insulator.



A.' J. SILER.

INSULATOR.

APPLICATION FILED 1320.10, 1909.

954,350. PanentedApn, 1910.

14ga 11 to@ www @d/Lw) a2/U .6i Mum@ c@ UNITED STATES PATENT OFFICE.

ANDREW J'. SILER, OF MASSILLON, OHIO, ASSIGNOR OF ONE-THIRD TO AARON V.SILER AND ONE-THIRD TO H. SUMNER SILER, BOTH 0F MASSILLON, OHIO.

INsULAiroR.

To all whom it may concern: l

Be it known that I, ANDREW J. SILEn, a citizen of the United States,lresiding at Massillon, in the county of Stark and State of Ohio, haveinvented certain new and usepassed around the insulator and bentaroundthe line wire, frequently doing great damage to the latter. A\tteryears of practical cxperienee in this line of work, l have found that bythe use of the tie wire, the main wire' is burned while wrapping it,causing it to become weak at that point which is the iirst place tobreak. lf the line is not wrapped tight with the tie wire, and the linewire breaks, it will run back practically one-halt mile, leaving a slackin the wire, and in Order to rc-adjust the wire, the tie wires from allthe insulators for that distance must be removed to draw up the slack,and then be tied. This often happens after the wires have been up sometinie,and the tie wires have loosened up. lt might be further statedthat when copper wire is used, the com anios prohibit the use of pliersin tying, the inexnen being required to use only their hands, in orderto avoid getting it, too tight.

It is the iurposc ot' this invention to overcome this difficulty, aseach span is held by itself by the aid of a-convcx curve inthe crownslot of the insulator, and the line wire is held against this curve bythe pressure from beneath, that is, of the convex curve, and on top ateach end of the curve by means of a lock wire.

`Vlith these objects in view, my invention consists in certain novelfeatures of construction and combinations of parts which will behereinafter described and pointed out in the claims. A In theaccompanying drawings, Figure 1 is a View in ers ective, and Fig, 2 is avertical longitu ina section.

y In the drawings, A, indicates the insulator-,the crown of which isenlarged and subdlvided into two parts 11, by the centrally locatedlongitudinal groove 2, the bottom of which is convex, as shown in Fig.

Spe eiieation of Letters Patent. Application filed DecemberflO, 1909.

y Patented Apr. 5,1910. serial No. 532,362.

2. The two partsof the crown extend, preferably, so as to overhangthsadjacent body portion of the insulator and the upper surfaces ofwhich pjart preferably slope toward the ,central groove. The line wire 3extends through the groove, and the ends of the groove are beneath thelower edge of the overhanging of the crown portion.

A lock wire 5 encircles the insulator just below the crown, and overliesthe line wire at the ends or outlets of the groove, so that a double-pressure is' exerted upon the line wire, namely by the upward convexsurface olt the bottom of the groove, and downwardly by the encirclinglock wire, above 1the line wire at the two points where it extendsoutwardly from the ends of the groove. In thisway, the lock wire may bedrawn as tight as possible, whether by hand or instrument.

A minimum amount of wire is required to form the locking wires, as theydo not encircle the line wire, and at the same time, a definite locationis provided for the locking wire, and furthermore, the combined etfectof the convex bottom and the two points of engagement of the lockingwire upon the line wire makes a simple, secure, and etlectual fastening,which 1s easy to apply, and.

which prevents thc line wire from drawing through and becoming slack,while at the same time, preventing the burning out. alluded tohereinbefore.

vlt might further be mentioned that the insulator itself is of suchaconstruetion that it may he easily cast of glass, (porcelain, or evenrubber, and while the form illustrated is desirable, it is evident thatit might be more or less changed in shape, and design. without departingfrom the spirit and scope of my invention; hence I do not wish to limitmyself t the exact construction herein set. forth, butcl Having fullylhescribed my invention, what `I claim as new and desire to secureby Letters Patent, is

1. An insulator made of a single piece of material comprising a bodyportion having a crown at one end which overhan s the body portion, andwhich is subdivide by a convex groove through the longitudinal center.

2. An insulator made of a single piece of material comprising a bodvportion having u crown at one end whi i overhangs the gkpoijionruid'whchis snbz'ivigied by a "voigiovethro'gh the longitudinal cen' @Kthe-np x''surfaces of the two parts ofd ollnjng downwardly to the groove. 53.1Tlqcom ination with an insulator havanfoverhanging subdivided crownat the inmune groove subdividng the crown being I,4| onvex, and a linewire passed in Contact l Jvfvith the convex groove, of a, lock wireencir- 0 olinggthe insulator immediately below the overhanging portionof the crown and hold- 1ng the ine wire at each end of tbe groove byengaging between the overhangmg portions of the crown and the line wire.y

In testlmony whereof I 9,6375 my signature,

in the presence of two witnesses. y

I ANDREW J. SILER. Witnesses:

FAY ARTHUR, WM. JOHNS.

